Multiface piston



Nov. 13 1945. E. R. DAILEY 2,388,781 I MULTIFACE PISTON I Filed Dec. 6, 1943 Ema/20 Q DJILEV Inventor Patented Nov. 13, 1945 UNITED STATES PATENT OFFICE MULTIFACE PISTON Edward R. Dailey, Little Rock, Ark.

Application December 6, 1943, Serial No. 513,098

1 Claim.

This invention relates to a piston, the general object of the invention being to provide the piston with an increased area for receiving the fluid pressure so that the power stroke of the piston is increased over that of a piston having an ordinary face for receiving the pressure.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the ap ended claim.

In describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a sectional view through a piston constructed in accordance with the invention.

Figure 2 is a top, plan view of Figure 1.

Figure 3 is a sectional view through a double type piston such as used in a steam cylinder.

As shown in Figures 1 and 2, the piston A has a recess l in its face or end 2, this end being of considerable thickness and the recess terminating in spaced relation to the underface of the end 2 so as to leave a partition 3, the upper face of which forms a bottom for the recess l. The

. recess has its side walls sloping downwardly and upon the upper face of the partition 3, thus increasing the power stroke of the piston.

Figure 3 shows a piston A with a recess I in each face thereof so that both faces or ends of the piston have their pressure contact areas increased. This piston can be used in steam cylinders where the steam Works upon both ends or faces of the piston.

As will be understood the pressure acts on the adjacent area of the pressure receiving face of the piston so that more power is developed and no more fuel used and without increasing the cylinder or the piston in size.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes fall within the scope of the appended claim.

Having described the invention, what is claimed as new is:

A piston of the class described comprising a pressure receiving end having a frusto-com'cal recess therein formed with a straight side wall and a fiat bottom wall, said recess flaring inwardly from said end to provide an annular end pressure receiving face on the piston and a. pressure receiving surface of maximum diameter within the piston for augmenting the annular pressure receiving face and which is spaced from said annular face uniformly.

EDWARD R. DAILEY. 

